Organic electric element, display panel comprising the same and display device comprising the same

ABSTRACT

Provided are an organic electric element, a display panel and a display device including the organic electric element which include a charge generating layer including a first layer comprising a first compound and a second compound and a second layer comprising a third compound so that they may have excellent efficiency or lifespan.

CROSS REFERENCE TO RELATED APPLICATION

This application claims priority from Korean Patent Application No.10-2019-0179837, filed on Dec. 31, 2019, which is hereby incorporated byreference for all purposes as if fully set forth herein.

BACKGROUND Technical Field

Embodiments relate to an organic electric element, a display panel, anda display device including the organic electric element.

Discussion of the Related Art

In general, an organic light emitting phenomenon refers to thephenomenon of converting electrical energy into light energy by means ofan organic material. An organic electric element refers to an electricelement using the organic light emitting phenomenon.

An organic electric element using the organic light emitting phenomenonmay be applied to a display device. Since the portable display device isdriven by a battery, which is a limited power source, an organicelectric element used in the portable display device requires excellentlight emission efficiency. In addition, since the image should bedisplayed normally during use of the electronic device, a long life ofthe organic electric element may be also required.

In order to improve efficiency, lifespan and driving voltage in theorganic electric element, research has been conducted on the organicmaterial included in the organic electric element.

SUMMARY

Accordingly, embodiments of the present disclosure are directed to anorganic electric element, a display panel, and a display device thatsubstantially obviate one or more of the problems due to limitations anddisadvantages of the related art.

Embodiments may provide an organic electric element having highefficiency or long life.

Embodiments may provide a display panel having high efficiency or longlife by including the above-described organic electric element.

Further, embodiments may provide a display device having high efficiencyor long life by including the above-described display panel.

Additional features and aspects will be set forth in the descriptionthat follows, and in part will be apparent from the description, or maybe learned by practice of the inventive concepts provided herein. Otherfeatures and aspects of the inventive concepts may be realized andattained by the structure particularly pointed out in the writtendescription, or derivable therefrom, and the claims hereof as well asthe appended drawings.

To achieve these and other aspects of the inventive concepts, asembodied and broadly described, an organic electric element comprises afirst electrode, a second electrode and an organic layer.

The organic layer is positioned between the first electrode and thesecond electrode.

The organic layer comprises a light emitting layer and a first layer.

The first layer comprises a first compound and a second compound.

The first compound is represented by one or more of the followingchemical formula 1 and chemical formula 2.

The second compound is represented by the following chemical formula 3.

According to another aspect, embodiments may provide a display panelcomprising a subpixel comprising the organic electric element.

According to another aspect, embodiments may provide a display devicecomprising the display panel and a driving circuit for driving thedisplay panel.

According to embodiments, it is possible to provide the organic electricdevice having high luminous efficiency and long life.

According to embodiments, it is possible to provide a display panelincluding the organic electric device having a high luminous efficiencyand long life and a display device comprising the same.

It is to be understood that both the foregoing general description andthe following detailed description are exemplary and explanatory and areintended to provide further explanation of the inventive concepts asclaimed.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are included to provide a furtherunderstanding of the disclosure and are incorporated in and constitute apart of this application, illustrate embodiments of the disclosure andtogether with the description serve to explain various principles. Inthe drawings:

FIG. 1 is a system configuration diagram of a display device accordingto embodiments;

FIG. 2 is a view illustrating a subpixel circuit of a display panelaccording to embodiments; and

FIG. 3 and FIG. 4 are schematic cross-sectional views of an organicelectric device according to embodiments.

DETAILED DESCRIPTION

In the following description of examples or embodiments of the presentinvention, reference will be made to the accompanying drawings in whichit is shown by way of illustration specific examples or embodiments thatcan be implemented, and in which the same reference numerals and signscan be used to designate the same or like components even when they areshown in different accompanying drawings from one another. Further, inthe following description of examples or embodiments of the presentinvention, detailed descriptions of well-known functions and componentsincorporated herein will be omitted when it is determined that thedescription may make the subject matter in some embodiments of thepresent invention rather unclear. The terms such as “including”,“having”, “containing”, “constituting” “make up of”, and “formed of”used herein are generally intended to allow other components to be addedunless the terms are used with the term “only”. As used herein, singularforms are intended to include plural forms unless the context clearlyindicates otherwise.

Terms, such as “first”, “second”, “A”, “B”, “(A)”, or “(B)” may be usedherein to describe elements of the present invention. Each of theseterms is not used to define essence, order, sequence, or number ofelements etc., but is used merely to distinguish the correspondingelement from other elements.

When it is mentioned that a first element “is connected or coupled to”,“contacts or overlaps” etc. a second element, it should be interpretedthat, not only can the first element “be directly connected or coupledto” or “directly contact or overlap” the second element, but a thirdelement can also be “interposed” between the first and second elements,or the first and second elements can “be connected or coupled to”,“contact or overlap”, etc. each other via a fourth element. Here, thesecond element may be included in at least one of two or more elementsthat “are connected or coupled to”, “contact or overlap”, etc. eachother.

When time relative terms, such as “after,” “subsequent to,” “next,”“before,” and the like, are used to describe processes or operations ofelements or configurations, or flows or steps in operating, processing,manufacturing methods, these terms may be used to describenon-consecutive or non-sequential processes or operations unless theterm “directly” or “immediately” is used together.

In addition, when any dimensions, relative sizes etc. are mentioned, itshould be considered that numerical values for an elements or features,or corresponding information (e.g., level, range, etc.) include atolerance or error range that may be caused by various factors (e.g.,process factors, internal or external impact, noise, etc.) even when arelevant description is not specified. Further, the term “may” fullyencompasses all the meanings of the term “can”.

The term “halo” or “halogen” as used herein refers to fluorine (F),bromine (Br), chlorine (Cl), or iodine (I) unless otherwise indicated.

As used herein, the term “alkyl” or “alkyl group” refers to a saturatedaliphatic functional radical of 1 to 60 carbon atoms with a single bondtherein, including a straight chain alkyl group, a branched chain alkylgroup, a cycloalkyl (alicyclic) group, an alkyl-substituted cycloalkylgroup, and a cycloalkyl-substituted alkyl group, unless otherwiseindicated.

The term “haloalkyl group” or “halogenalkyl group”, as used herein,means a halogen-substituted alkyl group unless otherwise specified.

The term “heteroalkyl group”, as used herein, means that at least one ofthe carbon atoms constituting the alkyl group has been replaced with aheteroatom.

As used herein, the terms “alkenyl group” and “alkynyl group”, refer toa straight or branched chain of 2 to 60 carbon atoms with a double and atriple bond therein, respectively, unless stated otherwise, but are notlimited thereto.

Unless otherwise stated, the term “cycloalkyl” as used herein refers toan alkyl forming a ring having 3 to 60 carbon atoms, without beinglimited thereto.

Unless otherwise stated, the term “alkoxyl group”, “alkoxy group”, or“alkyloxy group” as used herein means an alkyl group of 1 to 60 carbonatoms having an oxygen radical attached thereto, but is not limitedthereto.

As used herein, the term “alkenoxyl group”, “alkenoxy group”,“alkenyloxyl group”, or “alkenyloxy group” means an alkenyl group of 2to 60 carbon atoms having an oxygen radical attached thereto, unlessotherwise stated, but is not limited thereto.

As used herein, the term “aryloxyl group” or “aryloxy group” means anaryl group of 6 to 60 carbon atoms having an oxygen radical attachedthereto unless otherwise specified, but is not limited thereto.

As used herein, the terms “aryl group” and “arylene group” each refer tohaving 6 to 60 carbon atoms unless otherwise stated, but are not limitedthereto. In the present disclosure, an aryl group or an arylene groupmeans a single or multiple aromatic ring, including an aromatic ringwhich is formed as neighboring substituents participate in a bond or areaction. For example, the aryl group may be a phenyl group, a biphenylgroup, a terphenyl group, a naphthyl group, an anthracenyl group, afluorene group, a spirofluorene group, or a spirobifluorene group.

The prefix “aryl” or “ar” means a radical substituted with an arylgroup. For example, an arylalkyl group is an alkyl group substitutedwith an aryl group and an arylalkenyl group is an alkenyl groupsubstituted with an aryl group. In this regard, the radical substitutedwith an aryl group has the number of carbon atoms described herein.

Also, when prefixes are named consecutively, it means that thesubstituents are listed in the order described first. By way of example,an arylalkoxy group means an alkoxy group substituted with an arylgroup, an alkoxylcarbonyl group means a carbonyl group substituted withan alkoxyl group, and an arylcarbonylalkenyl group means an alkenylgroup substituted with an arylcarbonyl group wherein the arylcarbonylgroup is a carbonyl group substituted with an aryl group.

As used herein, the term “heteroalkyl” means an alkyl bearing one ormore heteroatoms unless otherwise indicated. As used herein, the terms“heteroaryl group” and “heteroarylene group” refer respectively to anaryl group and an arylene group of 2 to 60 carbon atoms bearing one ormore heteroatoms therein, unless otherwise specified, without beinglimited thereto. It may include at least one of a single ring andmultiple rings, and may be formed by combining adjacent functionalgroups.

Unless otherwise indicated, the term “heterocyclic group” as usedherein, refers to at least one of heteroaliphatic rings andheteroaromatic rings of 2 to 60 carbon atoms bearing one or moreheteroatoms as a ring member thereof, which may be mono- or multi-cyclicand may be formed as neighboring functional groups combine with eachother.

The term “heteroatom” as used herein refers to N, O, S, P, or Si unlessotherwise stated.

“Heterocyclic groups” may also include rings comprising SO2, in place ofcarbon atoms, as a ring member. For example, a “heterocyclic group”includes the following compounds.

Unless otherwise stated, the term “aliphatic” as used herein means analiphatic hydrocarbon of 1 to 60 carbon atoms, and the “aliphatic ring”means an aliphatic hydrocarbon ring of 3 to 60 carbon atoms.

Unless otherwise stated, the term “ring” as used herein refers to analiphatic ring of 3 to 60 carbon atoms, an aromatic ring of 6 to 60carbon atoms, a hetero ring of 2 to 60 carbon atoms, or a fused ringconsisting of a combination thereof whether or not it is saturated orunsaturated.

Other hetero-compounds or hetero-radicals other than the aforementionedhetero-compounds include, but are not limited to, one or moreheteroatoms.

Unless otherwise stated, the term “carbonyl” as used herein isrepresented by —COR′, wherein R′ is hydrogen, an alkyl group of 1 to 20carbon atoms, an aryl group of 6 to 30 carbon atoms, a cycloalkyl groupof 3 to 30 carbon atoms, an alkenyl group of 2 to 20 carbon atoms, analkynyl group of 2 to 20 carbon atoms, or a combination thereof.

Unless otherwise specified, the term “ether” as used herein isrepresented by —R—O—R′, wherein R and R′ are each independentlyhydrogen, an alkyl group of 1 to 20 carbon atoms, an aryl group of 6 to30 carbon atoms, a cycloalkyl group of 3 to 30 carbon atoms, an alkenylgroup of 2 to 20 carbon atoms, an alkynyl group of 2 to 20 carbon atoms,or a combination thereof.

Also, unless explicitly stated otherwise, the term “substituted” in theexpression “substituted or unsubstituted” means having at least onesubstituent selected from the group consisting of, but not limited to,deuterium, halogen, an amino group, a nitrile group, a nitro group, aC1-C20 alkyl group, a C1-C20 alkoxyl group, a C1-C20 alkylamine group, aC1-C20 alkylthiophene group, a C6-C20 arylthiophene group, a C2-C20alkenyl group, a C2-C20 alkynyl, a C3-C20 cycloalkyl group, a C6-C20aryl group, a deuterium-substituted C6-C20 aryl group, a C8-C20 arylalkenyl group, a silane group, a boron group, a germanium group, and aC2-C20 hetero-ring.

Also, unless otherwise stated, the chemical formulas used in the presentinvention are as defined for the exponent parts of the substituent inthe following chemical formula:

wherein,

when a is an integer of 0, the substituent R1 being null,

when a is an integer of 1, one substituent R1 is bonded to any one ofthe constituent carbon atoms of the benzene ring,

when a is an integer of 2 or 3, the substituents R1's, which may be thesame or different, are each bonded as represented below, and

when a is an integer of 4 to 6, the substituents R1's are bonded to theconstituents carbon atoms of the benzene ring in the same manner

while the hydrogens bonded to the constituent carbon atoms of thebenzene ring are not indicated:

In the present specification, the formation of a ring by combiningsubstituents with each other means that adjacent groups combine witheach other to form a monocycle or single ring, a ring aggregated or aconjugated multi-cycle, and the monocycle, the ring aggregated and theformed conjugated multicycle may include the heterocycle including atleast one heteroatom, and may include aromatic and non-aromatic rings.

In the present specification, the organic electric element may mean acomponent(s) between an anode and a cathode, or an organic lightemitting diode including the anode, the cathode and the component(s)positioned therebetween.

In the present specification, the organic electric element may mean oneof an organic electric device, the organic light emitting diode and thepanel including the same, and an electronic device including the paneland a circuit. For example, the electronic device includes a displaydevice, a lighting device, a solar cell, a portable or mobile terminal(eg, a smart phone, a tablet, a PDA, an electronic dictionary, a PMP,etc.), a navigation terminal, a game machine, various TVs, and variouscomputers monitor and the like, but is not limited thereto, and may beany type of device as long as the component(s) are included.

Hereinafter, exemplary embodiments of the present disclosure will bedescribed in detail with reference to the accompanying drawings.

FIG. 1 is a system configuration diagram of a display device accordingto embodiments.

Referring to FIG. 1, the display device 100 in accordance withembodiments of the present disclosure includes a display panel 110 inwhich a plurality of data lines DL and a plurality of gate lines GL arearranged and a plurality of sub-pixels 111 defined by the plurality ofdata lines DL and the plurality of gate lines GL is arranged, a datadriving circuit DDC (or a data driver) for driving the plurality of datalines DL, a gate driving circuit GDC (or a gate driver) for driving theplurality of gate lines GL, a controller D-CTR controlling the datadriving circuit DDC and the gate driving circuit GDC, and the like.

The controller D-CTR controls operations of the data driving circuit DDCand the gate driving circuit GDC by supplying respective control signals(DCS, GCS) to the data driving circuit DDC and the gate driving circuitGDC.

The controller D-CTR starts the scan of pixels according to timingsprocessed in each frame, converts image data inputted from other devicesor other image providing sources to be adapted to a data signal formused in the data driving circuit DDC and then outputs image data DATAresulted from the converting, and causes the data to be loaded into thepixels at a pre-configured time according to the scan.

The controller D-CTR may be implemented as a separate component from thedata driving circuit DDC or may be integrated with data driving circuitDDC so the controller D-CTR can be implemented as an integrated circuit.

The data driving circuit DDC drives the plurality of data lines DL byproviding data voltages corresponding to image data DATA received fromthe controller D-CTR to the data lines DL.

Here, the data driving circuit DDC is sometimes referred to as a sourcedriving circuit or a source driver.

The data driving circuit DDC may include at least one source driverintegrated circuit SDIC to be implemented.

Each source driver integrated circuit SDIC may include a shift register,a latch circuit, a digital to analog converter DAC, an output buffer,and/or the like.

In some instances, each source driver integrated circuit SDIC mayfurther include one or more analog to digital converters ADC.

The gate driving circuit GDC sequentially drives a plurality of gatelines GL by sequentially providing scan signals to the plurality of gatelines GL. Here, the gate driving circuit GDC is sometimes referred to asa scan driving circuit or a scan driver.

The gate driving circuit GDC may include at least one gate driverintegrated circuit GDIC to be implemented.

Each gate driver integrated circuit GDIC may include a shift register, alevel shifter, and/or the like.

Each gate driver integrated circuit GDIC may be connected to a bondingpad of the display panel 110 in a tape automated bonding (TAB) type or achip on glass (COG) type, or be directly disposed on the display panel110 as being implemented in a gate in panel (GIP) type. In someinstances, the gate driver integrated circuit GDIC may be disposed to beintegrated with the display panel 110. Further, each gate driverintegrated circuit GDIC may be implemented in a chip on film (COF) typein which the gate driver integrated circuit GDIC is mounted on a filmconnected with the display panel 110.

According to the controlling of the controller D-CTR, the gate drivingcircuit GDC sequentially provides scan signals of an on-voltage or anoff-voltage to the plurality of gate lines GL.

When a specific gate line is asserted by a scan signal from the gatedriving circuit GDC, the data driving circuit DDC converts image dataDATA received from the controller D-CTR into analog data voltages andprovides the obtained analog data voltages to the plurality of datalines DL.

The data driving circuit DDC may be located on, but not limited to, onlyone side (e.g., an upper side or a lower side) of the display panel 110,or in some instances, be located on, but not limited to, two sides(e.g., the upper side and the lower side) of the display panel 110according to driving schemes, panel design schemes, or the like.

The gate driving circuit GDC may be located on, but not limited to, onlyone side (e.g., a left side or a right side) of the panel 110, or insome instances, be located on, but not limited to, two sides (e.g., theleft side and the right side) of the display panel 110 according todriving schemes, panel design schemes, or the like.

The display device 100 according to embodiments of the presentdisclosure may be one of various types of display devices, such as, aliquid crystal display device, an organic light emitting display device,a plasma display device, or the like.

In case the display device 100 according to embodiments of the presentdisclosure is an organic light emitting display device, each sub-pixel111 arranged in the display panel 110 may include circuit components,such as an organic light emitting diode (OLED), which is a self-emissiveelement, a driving transistor for driving the organic light emittingdiode OLED, and the like.

Types of circuit elements and the number of the circuit elementsincluded in each subpixel 111 may be different depending on types of thepanel (e.g., an LCD panel, an OLED panel, etc.), provided functions,design schemes/features, or the like.

FIG. 2 is a view illustrating a subpixel circuit of a display panelaccording to embodiments.

Referring to FIG. 2, each subpixel 111 may include an organic lightemitting diode OLED and a driving transistor DRT for driving the organiclight emitting diode OLED as basic circuit components.

Referring to FIG. 2, each sub-pixel 111 may further include a firsttransistor T1 allowing a data voltage VDATA to be applied to a firstnode N1 corresponding to a gate node of the driving transistor DRT, anda storage capacitor C1 for remaining a data voltage VDATA correspondingto an image signal voltage or a voltage corresponding to this during oneframe time.

The organic light emitting diode OLED may include a first electrode 221(an anode electrode or a cathode electrode), a light emitting layer 222,a second electrode 223 (the cathode electrode or the anode electrode),and the like.

In one embodiment, a low-level voltage EVSS may be applied to the secondelectrode 223 of the organic light emitting diode OLED.

The driving transistor DRT causes the organic light emitting diode OLEDto be driven by providing a driving current to the organic lightemitting diode OLED.

The driving transistor DRT includes a first node N1, a second node N2and a third node N3.

The first node N1 of the driving transistor DRT may be a nodecorresponding to the gate node thereof, and may be electricallyconnected to a source node or a drain node of the first transistor T1.

The second node N2 of the driving transistor DRT may be electricallyconnected to the first electrode 221 of the organic light emitting diodeOLED and may be a source node or a drain node.

The third node N3 of the driving transistor DRT may be the drain node orthe source node as a node to which a driving voltage EVDD is applied,and may be electrically connected to a driving voltage line DVL used tosupply a driving voltage EVDD.

The first transistor T1 may be electrically connected between a dataline DL and the first node N1 of the driving transistor DRT and may becontrolled by a scan signal SCAN that is provided through a gate lineand applied to the gate node of the first transistor T1.

The storage capacitor C1 may be electrically connected between the firstnode N1 and the second node N2 of the driving transistor DRT.

The storage capacitor C1 is an external capacitor intentionally designedto be located outside of the driving transistor DRT, not an internalstorage, such as a parasitic capacitor (e.g., a Cgs, a Cgd) thatpresents between the first node N1 and the second node N2 of the drivingtransistor DRT.

FIG. 3 is a cross-sectional view of a display device according to theembodiments.

Referring to FIG. 3, an organic electric element 320 according to theembodiments includes a first electrode 321 and a second electrode 323,an organic layer 322 positioned therebetween.

The first electrode 321 may be an anode and the second electrode 323 maybe a cathode. In the case of an inverted type, the first electrode 321may be a cathode and the second electrode 323 may be an anode.

For example, the first electrode 321 may be a transparent electrode, andthe second electrode 323 may be a reflective electrode. In anotherexample, the first electrode 321 may be a reflective electrode, and thesecond electrode 323 may be a transparent electrode.

The organic layer 322 may include a plurality of layers which is locatedbetween the first electrode 321 and the second electrode 323 andincludes an organic material.

The organic layer 322 includes a light emitting layer 322 a and a firstlayer 322 b.

The light emitting layer 322 a is a layer in which holes and electronstransmitted from the first electrode 321 and the second electrode 323are recombined to emit light, and may include, for example, a hostmaterial and a dopant.

The light emitting layer 322 a may include a third compound. The thirdcompound may be, for example, a host material or a dopant included inthe light emitting layer 322 a.

The first layer 322 b may be positioned between the light emitting layer322 a and the first electrode 321. For example, the first layer 322 bmay be positioned between the first electrode 321 as an anode electrodeand the light emitting layer 322 a.

Although not illustrated in FIG. 3, the organic electric device 320 mayfurther include one or more of a hole transport layer, an electrontransport layer, and an electron injection layer. For example, the holetransport layer may be positioned between the hole injection layer 322 band the light emitting layer 322 a and at the same time between thelight emitting layer 322 a and the first electrode 321 as an anodeelectrode. For example, the electron injection layer may be positionedbetween the second electrode 323 as a cathode electrode and the lightemitting layer 322 a. For example, the electron transport layer may bepositioned between the light emitting layer 322 a and the electroninjection layer and at the same time between the second electrode 323 asthe cathode electrode and the light emitting layer 322 a. In examplesincluding the hole injection layer, the first layer 322 b may be thehole injection layer.

The first layer 322 b includes a first compound. The hole transportlayer may also include the first compound. The first compound includedin each layer may be the same as each other or may be different fromeach other as long as the requirements for the first compound to bedescribed later are met.

FIG. 4 is a view schematically showing an organic electric deviceaccording to embodiments.

Referring to FIG. 4, the organic electric element 420 according toembodiments includes a first electrode 421, a second electrode 423, andan organic layer 422 positioned between the first electrode 421 and thesecond electrode 423.

The first electrode 421 may be, for example, an anode electrode, and thesecond electrode 423 may be a cathode electrode.

For example, the first electrode 421 may be a transparent electrode, andthe second electrode 423 may be a reflective electrode. In anotherexample, the first electrode 421 may be a reflective electrode, and thesecond electrode 423 may be a transparent electrode.

The organic layer 422 is a layer including an organic material whilebeing positioned between the first electrode 421 and the secondelectrode 423, and may be composed of a plurality of layers.

The organic layer 422 includes a first stack 424, a second stack 425,and a charge generating layer 426 positioned between the first stack 424and the second stack 425.

The organic electric element 420 may be a tandem organic electricelement including a plurality of stacks each including a light emittinglayer. The plurality of light emitting layers may be made of the samematerial as each other, or may be made of different materials from eachother.

The first stack 424 includes a first emitting layer 424 a. The firstemitting layer 424 a may include, for example, a host material and adopant.

The first stack 424 may further include a first hole transport layer 424b and a first electron transport layer 424 b.

The first hole transport layer 424 b may be positioned between the firstlight emitting layer 424 a and one of the first electrode 421 and thesecond electrode 423 as an anode electrode. The first electron transportlayer 424 c may be positioned between the first light emitting layer 424a and one of the first electrode 421 and the second electrode 423 as acathode electrode. For example, when the first electrode 421 is theanode electrode and the second electrode 423 is the cathode electrode,the first hole transport layer 424 b may be positioned on the firstelectrode 421, the first light emitting layer 424 a may be positioned onthe first hole transport layer 424 b, and the first electron transportlayer 424 c may be positioned on the first light emitting layer 424 a.

The second stack 425 includes a second emitting layer 425 a. The secondemitting layer 425 a may include, for example, a host material and adopant.

The second stack 425 may further include a second hole transport layer425 b and a second electron transport layer 424 b.

The second hole transport layer 425 b may be positioned between thesecond light emitting layer 425 a and one of the first electrode 421 andthe second electrode 423 as an anode electrode. The second electrontransport layer 425 c may be positioned between the second lightemitting layer 424 a and one of the first electrode 421 and the secondelectrode 423 as a cathode electrode. For example, when the firstelectrode 421 is the anode electrode and the second electrode 423 is thecathode electrode, the second hole transport layer 425 b may bepositioned on the second electrode 421, the second light emitting layer425 a may be positioned on the second hole transport layer 425 b, andthe second electron transport layer 424 c may be positioned on thesecond light emitting layer 425 a.

Since the first stack 424 and the second stack 425 are configured asdescribed above, holes and electrons transmitted from the firstelectrode 421 and the second electrode 423 are recombined with eachother in the first and second light emitting layers 424 a and 232 sothat tight may be emitted from by recombination the first and secondlight emitting layers 424 a and 432.

The charge generating layer 426 is formed between a plurality of lightemitting layers to smoothly distribute charges so that it may increasethe current efficiency of the light emitting layer. Accordingly, thecharge generating layer 426 is positioned between the first stack 424including the first light emitting layer 424 a and the second stack 425including the second light emitting layer 425 a.

The charge generating layer 426 may include a p-type charge generatinglayer and an n-type charge generating layer in order to smoothlydistribute charges. For example, the first layer 426 a may be a p-typecharge generating layer and the second layer 426 b may be an n-typecharge generating layer. When the first electrode 421 is the anodeelectrode and the second electrode 423 is the cathode electrode, thep-type charge generating layer may be located on the cathode electrodeside and the n-type charge generating layer may be located on the anodeside. For example, the first layer 426 a may be positioned between thesecond layer 426 b and the second electrode 423 which is a cathodeelectrode.

Although FIG. 4 shows the tandem organic electric element including twostacks, the embodiment is not limited to the tandem organic electricelement including two stacks, and includes tandem organic electricelement including two or more stacks. When the organic electricalelement 420 further includes a stack, a charge generating layer may beadditionally positioned between the additionally included stack and oneof the adjacent first stack 424 and the second stack 425.

The organic electric element 420 may include a hole injection layer 427.The hole injection layer 427 may be positioned between the firstelectrode 421 as an anode electrode and the first light emitting layer424 a. For example, the hole injection layer 427 may be positionedbetween the first electrode 421 as an anode electrode and the first holetransport layer 424 b.

Although not illustrated in FIG. 4, the organic electric element 420 mayfurther include an electron injection layer. For example, the electroninjection layer may be positioned between the second electrode 423 as acathode electrode, and the second electron transport layer 425 c.

In another example, each of the first stack 424 and the second stack 425may further include one or more of a hole injection layer and anelectron injection layer. Within each stack, the hole injection layermay be located between the light emitting layer and the anode electrode,and an electron injection layer may be located between the lightemitting layer and the cathode electrode.

The first layer 426 a includes the first compound. The first holetransport layer 424 b may include the first compound, and the secondhole transport layer 425 b may also include the first compound. Further,the hole injection layer may also include the first compound. The firstcompound included in each layer may be the same as each other or may bedifferent from each other as long as the requirements for the firstcompound described later are met.

The first compound is represented by one or more of the followingchemical formula 1 and chemical formula 2.

Hereinafter, chemical formula 1 and chemical formula 2 will bedescribed.

R₁ to R₆, which are same or different, are each independently oneselected from the group consisting of a hydrogen; a deuterium; atritium; a halogen; a cyano group; a nitro group; a C₆-C₆₀ aryl group; afluorenyl group; a C₂-C₆₀ hetero ring group containing at least onehetero atom from O, N, S, Si and P; a fused ring group of a C₃-C₆₀aliphatic ring and a C₆-C₆₀ aromatic ring; a C₁-C₅₀ alkyl group; aC₂-C₂₀ alkenyl group; a C₂-C₂₀ alkynyl group; a C₁-C₃₀ alkoxy group; aC₆-C₃₀ aryloxy group; a C₃-C₆₀ alkylsilyl group; a C₁₈-C₆₀ arylsilylgroup; and a C₈-C₆₀ alkylarylsilyl group, and one or more of R₁ to R₆ isthe cyano group.

When R₁ to R₆ are the aryl groups, they may be each independently aC₆-C₆₀ aryl group, a C₆-C₃₀ aryl group or a C₆-C₁₂ aryl group.

A₁ to A₄, which may be the same or different, are each independently oneselected from the group consisting of a hydrogen; a deuterium; atritium; a halogen; a cyano group; a nitro group; a C₆-C₆₀ aryl group; afluorenyl group; a C₂-C₆₀ hetero ring group containing at least onehetero atom from O, N, S, Si and P; a fused ring group of a C₃-C₆₀aliphatic ring and a C₆-C₆₀ aromatic ring; a C₁-C₅₀ alkyl group; aC₂-C₂₀ alkenyl group; a C₂-C₂₀ alkynyl group; a C₁-C₃₀ alkoxy group; aC₆-C₃₀ aryloxy group; a C₃-C₆₀ alkylsilyl group; a C₁₈-C₆₀ arylsilylgroup; and a C₈-C₆₀ alkylarylsilyl group.

In R₁ to R₆ and A₁ to A₄ of the chemical formula 1 and the chemicalformula 2, the aryl group, the fluorenyl group, the hetero ring group,the fused ring group, the alkyl group, the alkenyl group, the alkynylgroup, the alkoxy group, the aryloxy group, the alkylsilyl group, thearylsilyl group and the alkylarylsilyl group may each be furthersubstituted with at least one substituent selected from the groupconsisting of a deuterium; a nitro group; a cyano group; a halogen; anamino group; a C₁-C₂₀ alkoxyl group; a C₁-C₂₀ alkyl group; a C₂-C₂₀alkenyl group; a C₂-C₂₀ alkynyl group; a C₆-C₂₀ aryl group; a C₆-C₂₀aryl group substituted with the deuterium; a fluorenyl group; a C₂-C₂₀hetero ring group; a C₃-C₆₀ alkylsilyl group; a C₁₈-C₅₀ arylsilyl group;and a C₈-C₆₀ alkylarylsilyl group.

When the first compound is represented by one or more of the chemicalformula 1 and the chemical formula 2, for example, the first layerincludes one compound (A) represented by chemical formula 1 and onecompound (B) represented by chemical formula 2, it means that all thetwo compounds (A, B) are included in the first compound.

The first layer 426 a includes a second compound. The second compound isrepresented by the following chemical formula 3.

Hereinafter, chemical formula 3 will be described.

R₁ and R₂, which may be the same or different, are each independentlyone selected from the group consisting of a C₆-C₆₀ aryl group; afluorenyl group; a C₂-C₆₀ hetero ring group containing at least onehetero atom from O, N, S, Si and P; a fused ring group of a C₃-C₆₀aliphatic ring and a C₁-C₂₀ alkyl group.

When R₁ and R₂ are the aryl groups, they may be each independently aC₆-C₆₀ aryl group, a C₆-C₃₀ aryl group or a C₆-C₁₂ aryl group.

When R₁ and R₂ are the alkyl group, they may be each independently aC₁-C₃₀ alkyl group, a C₆-C₂₀ alkyl group or a C₆-C₁₂ alkyl group.

L is one selected from the group consisting of a C₆-C₆₀ arylene group; afluorylene group; a C₂-C₆₀ divalent hetero ring group containing atleast one heteroatom from O, N, S, Si and P; a divalent fused ring groupof a C₃-C₆₀ aliphatic ring and a C₅-C₅₀ aromatic ring.

In R₁, R₂ and L of the chemical formula 3, the aryl group, the fluorenylgroup, the hetero ring group, the fused ring group, the alkyl group, thearylene group, the fluorylene group, the divalent fused ring group, andthe divalent fused ring group may each be further substituted with atleast one substituent selected from the group consisting of a deuterium;a nitro group; a cyano group; a halogen; an amino group; a C₁-C₂₀alkoxyl group; a C₁-C₂₀ alkyl group; a C₂-C₂₀ alkenyl group; a C₂-C₂₀alkynyl group; a C₆-C₂₀ aryl group; a C₆-C₂₀ aryl group substituted withthe deuterium; a fluorenyl group; a C₂-C₂₀ hetero ring group; a C₃-C₆₀alkylsilyl group; a C₁₈-C₆₀ arylsilyl group; and a C₈-C₆₀ alkylarylsilylgroup.

Since the organic electric element 420 includes the first layer 426 aincluding the first compound and the second compound, it can have highefficiency or long life.

The first chemical compound is represented by one or more of thefollowing chemical formula 4 and chemical formula 5.

Hereafter, the chemical formula 4 and the chemical formula 5 will bedescribed.

n and m are each independently an integer from 0 to 5.

R₇ to R₈, which may be the same or different, are each independently oneselected from the group consisting of a deuterium; a tritium; a halogen;a cyano group; a C₁-C₅₀ alkyl group; and a C₁-C₃₀ alkoxy group.

When R₇ and R₈ are alkoxy groups, they may be, for example, a C₁-C₃₀alkoxy group, a C₁-C₂₀ alkoxy group or a C₁-C₁₀ alkoxy group.

In R₇ and R₈ of the chemical formula 4 and the chemical formula 5, thealkyl group and the alkoxy group may each be further substituted with atleast one substituent selected from the group consisting of a deuteriumand a halogen.

When the first compound is represented by one or more of the chemicalformula 4 and the chemical formula 5, for example, the first layerincludes one compound (C) represented by chemical formula 4 and onecompound (D) represented by chemical formula 5, it means that all thetwo compounds (C, D) are included in the first compound.

When the first layer 426 a includes the first compound represented byone or more of the above chemical formulas 4 and 5, the organic electricelement 420 may have high efficiency or long life.

The first chemical compound is represented by one or more of thefollowing chemical formula 6 and formula 7.

The chemical formula 6 and the chemical formula 7 will be described.

R₁ to R₆, which are same or different, are each independently oneselected from the group consisting of a hydrogen; a deuterium; atritium; a halogen; a cyano group; a nitro group; a C₆-C₆₀ aryl group; afluorenyl group; a C₂-C₆₀ hetero ring group containing at least onehetero atom from O, N, S, Si and P; a fused ring group of a C₃-C₆₀aliphatic ring and a C₆-C₆₀ aromatic ring; a C₁-C₅₀ alkyl group; aC₂-C₂₀ alkenyl group; a C₂-C₂₀ alkynyl group; a C₁-C₃₀ alkoxy group; aC₆-C₃₀ aryloxy group; a C₃-C₆₀ alkylsilyl group; a C₁₈-C₆₀ arylsilylgroup; and a C₈-C₆₀ alkylarylsilyl group, and one or more of R₁ to R₆ isthe cyano group.

When R₁ to R₆ are the aryl groups, they may be each independently aC₆-C₆₀ aryl group, a C₆-C₃₀ aryl group or a C₆-C₁₂ aryl group.

In R₁ to R₆ of the chemical formula 6 and the chemical formula 7, thearyl group, the fluorenyl group, the hetero ring group, the fused ringgroup, the alkyl group, the alkenyl group, the alkynyl group, the alkoxygroup, the aryloxy group, the alkylsilyl group, the arylsilyl group andthe alkylarylsilyl group may each be further substituted with at leastone substituent selected from the group consisting of a deuterium; anitro group; a cyano group; a halogen; an amino group; a C₁-C₂₀ alkoxylgroup; a C₁-C₂₀ alkyl group; a C₂-C₂₀ alkenyl group; a C₂-C₂₀ alkynylgroup; a C₆-C₂₀ aryl group; a C₆-C₂₀ aryl group substituted with thedeuterium; a fluorenyl group; a C₂-C₂₀ hetero ring group; a C₃-C₆₀alkylsilyl group; a C₁₈-C₆₀ arylsilyl group; and a C₈-C₆₀ alkylarylsilylgroup.

When the first compound is represented by one or more of the chemicalformula 7 and the chemical formula 8, for example, the first layerincludes one compound (E) represented by chemical formula 7 and onecompound (F) represented by chemical formula 8, it means that all thetwo compounds (E, F) are included in the first compound.

When the first layer 426 a includes the first compound represented byone or more of the above chemical formulas 6 and 7, the organic electricelement 420 may have high efficiency or long life.

The first chemical compound may be one or more of the following chemicalcompounds.

When the first layer 426 a includes the first compound represented byone or more of the above chemical compound, the organic electric element420 may have high efficiency or long life.

The second compound is represented by the following chemical formula 8.

A-B-A  [chemical formula 8]

Hereinafter, chemical formula 8 will be described.

A is represented by the following chemical formula 8-A.

B is any one of chemical structures represented by the followings.

* in the B is the position to which the A is bonded.

In the chemical formula 8-A, R₁ and R₂, which may be the same ordifferent, are each independently one selected from the group consistingof a C₆-C₆₀ aryl group; a fluorenyl group; a C₂-C₆₀ hetero ring groupcontaining at least one hetero atom from O, N, S, Si and P; a fused ringgroup of a C₃-C₆₀ aliphatic ring and a C₁-C₂₀ alkyl group.

When R₁ and R₂ are the aryl groups, they may be each independently aC₆-C₆₀ aryl group, a C₆-C₃₀ aryl group or a C₆-C₁₂ aryl group.

When R₁ and R₂ are the alkyl group, they may be each independently aC₁-C₃₀ alkyl group, a C₆-C₂₀ alkyl group or a C₆-C₁₂ alkyl group.

In R₁ and R₂ of the chemical formula 8, the aryl group, the fluorenylgroup, the hetero ring group, the fused ring group, and the alkyl groupmay each be further substituted with at least one substituent selectedfrom the group consisting of a deuterium; a nitro group; a cyano group;a halogen; an amino group; a C₁-C₂₀ alkoxyl group; a C₁-C₂₀ alkyl group;a C₂-C₂₀ alkenyl group; a C₂-C₂₀ alkynyl group; a C₆-C₂₀ aryl group; aC₆-C₂₀ aryl group substituted with the deuterium; a fluorenyl group; aC₂-C₂₀ hetero ring group; a C₃-C₆₀ alkylsilyl group; a C₁₈-C₆₀ arylsilylgroup; and a C₈-C₆₀ alkylarylsilyl group.

Since the organic electric element 420 includes the first layer 426 aincluding the second compound represented by the chemical formula 8, itcan have high efficiency or long life.

The second chemical compound may be one or more of the followingchemical compounds.

When the first layer 426 a includes the second compound represented byone or more of the above chemical compound, the organic electric element420 may have high efficiency or long life.

When the first layer 426 a includes the third compound represented byone or more of the above chemical compound, the organic electric element420 may have high efficiency or long life.

The organic electric element 420 satisfies the following general formula1.

0.32 eV≤L ₁ −H ₂≤0.8 eV  [general formula 1]

In the general formula 1, L₁ is the LUMO energy level of the firstcompound. H₂ is the HOMO (Highest Occupied Molecular Orbital) energylevel of the second compound.

The lower limit of L₁−H₂ defined in the general formula 1 may be 0.34 eVor more, or 0.38 eV or more.

The upper limit of L₁−H₂ defined in the general formula 1 may be 0.7 eVeV or less, or 0.6 eV eV or less.

The organic electric device 420 includes the first layer including afirst compound and a second compound satisfying the general formula 1 sothat it may have a high efficiency or long life.

The organic electric element 420 satisfies the following general formula2.

0.80 eV≤L ₁ −H ₃≤1.4 eV  [general formula 2]

In the general formula 2, L₁ is the LUMO (Lowest Unoccupied MolecularOrbital) energy level of the first compound.

H₃ is the HOMO (Highest Occupied Molecular Orbital) energy level of thethird compound.

The lower limit of L₁−H₃ defined in the general formula 2 may be 0.90 eVor more, or 1.00 eV or more.

The upper limit of L₁−H₃ defined in the general formula 2 may be 1.3 eVor less, or 1.2 eV or less.

The organic electric device 420 includes the first layer including thefirst compound satisfying the general formula 2 and the light emittinglayer including the third compound so that it may have a high efficiencyor long life.

The organic electric element 420 satisfies the following general formula3.

0.40 eV≤H ₂ −H ₃≤0.9 eV  [general formula 3]

In the general formula 3, H₂ is the HOMO (Highest Occupied MolecularOrbital) energy level of the second compound.

H₃ is the HOMO (Highest Occupied Molecular Orbital) energy level of thethird compound.

The lower limit of H₂−H₃ defined in the general formula 3 may be 0.45 eVor more, or 0.50 eV or more.

The upper limit of H₂−H₃ defined in the general formula 3 may be 0.70 eVor less, or 0.60 eV or less.

The organic electric device 420 includes the first layer including thesecond compound satisfying the general formula 3 so that it may have ahigh efficiency or long life.

The first compound included in the first layer 426 a may be a dopant,and the second compound may be a host compound. Since the first layer426 a includes the above-described first compound as the dopant and theabove-described second compound as the host, the first layer 426 a hasexcellent hole transport properties so that the organic electric elementmay have excellent efficiency and lifespan.

The first compound may be doped at the ratio of 10% to 50% by weightinto the first layer 426 a. When the first compound satisfies the aboveratio, the first layer has excellent hole transport properties so thatthe organic electric element may have excellent efficiency and lifespan.

The thickness of the first layer 426 a is not particularly limited, butmay be, for example, 50 Å to 500 Å.

The thickness of the second layer 426 b is not particularly limited, butmay be, for example, 50 Å to 500 Å.

Other embodiments of the present invention may provide a display panel110.

The display panel 110 includes a sub-pixel 111 including theabove-described organic electric element 220.

In the display panel 110 according to the present embodiment, since theorganic electrical element 220 is the same as the organic electricalelement 220 according to the above-described embodiments, a descriptionthereof will be omitted.

In addition, since the display panel 110 and the sub-pixel 111 accordingto the embodiments have been described above, a description thereof willbe omitted.

Other embodiments of the present invention may provide a display device100.

The display device 100 includes the above-described display panel 110and a driving circuit for driving the above-described display panel 110.

In the display device 100 according to the present embodiments, thedisplay panel 110 is the same as the display panel 110 according to theabove-described embodiments, so a description thereof will be omitted.

In addition, since the driving circuit for driving the display panelaccording to embodiments has been described above, a description thereofwill be omitted.

Hereinafter, examples of manufacturing an organic electric elementaccording to the embodiments will be specifically described withreference to the embodiment, but the embodiments are not limited to thefollowing examples.

Manufacturing Evaluation of Organic Electric Element

Comparative Example 1

After washing a glass substrate coated with ITO (indium tin oxide) to athickness of 1,000 Å, the substrate is washed with a solvent such asisopropyl alcohol, acetone or methanol and dried. On this prepared ITOtransparent electrode, NPD(N,N′-Di(1-naphthyl)-N,N′-diphenyl-(1,1′-biphenyl)-4,4′-diamine) is used asthe second compound, F4-TCNQ(2,3,5,6-tetrafluoro-tetracyanoquinodimethane) was doped with 10% as thefirst compound and thermally vacuum-deposited to form a hole injectionlayer of 10 nm. A first hole transport layer (HTL1) was formed bythermal vacuum deposition of a hole transport material (NPD) of 100 nm.

Subsequently, a second hole transport layer (HTL2) was formed by thermalvacuum deposition of a hole transport material (TCTA,Tris(4-carbazoyl-9-ylphenyl) amine) to a thickness of 100 nm. Afterthat, ADN(9,10-di(naphtha-2-yl)anthracene) and 1,6-Bis(diphenylamine)pyrene were used as host and dopant materials,respectively, doped with 3%, and thermally vacuum-deposited to athickness of 20 nm to form a first light emitting layer.

Subsequently, a electron transport layer was formed by thermal vacuumdeposition of an electron transport material (TmPyPB, 1,3,5-Tri(m-pyridin-3-ylphenyl) benzene) to a thickness of 10 nm, andBphen(Bathophenanthroline) as an electron injection material was used,and Li was doped with 2% to form a electron injection layer by thermalvacuum deposition to a thickness of 20 nm. Subsequently, a cathode wasformed by depositing Al to a thickness of 50 nm, thereby fabricating anorganic electric element.

Embodiments 1 to 12 and Comparative Examples 2 to 4

The organic electric element was manufactured in the same manner as inthe Comparative Example 1, except that the first compound, the secondcompound and the third compound were used in the types and ratios shownin Table 1 below. Table 2 shows the performances of the manufacturedorganic electric elements.

TABLE 1 second third first chemical chemical L₁- L₁- H₂- chemical com-com- H₂ H₃ H₃ compound pound pound (eV) (eV) (eV) Comparative F4-TCNQNPD ADN 0.30 0.60 0.30 Example 1 (10%) Comparative F4-TCNQ 25 ADN 0.030.60 0.57 Example 2 (10%) Comparative F4-TCNQ 34 ADN −0.01 0.60 0.61Example 3 (10%) Comparative F4-TCNQ 60 ADN 0 0.60 0.60 Example 4 (10%)Embodiment 1 A04 (10%) NPD ADN 0.75 1.05 0.30 Embodiment 2 A04 (10%) 25ADN 0.48 1.05 0.57 Embodiment 3 A04 (10%) 34 ADN 0.44 1.05 0.61Embodiment 4 A04 (10%) 60 ADN 0.45 1.05 0.60 Embodiment 5 A15 (10%) NPDADN 0.76 1.06 0.30 Embodiment 6 A15 (10%) 25 ADN 0.49 1.06 0.57Embodiment 7 A15 (10%) 34 ADN 0.45 1.06 0.61 Embodiment 8 A15 (10%) 60ADN 0.46 1.06 0.60 Embodiment 9 A38 (10%) NPD ADN 0.70 1.00 0.30Embodiment 10 A38 (10%) 25 ADN 0.43 1.00 0.57 Embodiment 11 A38 (10%) 34ADN 0.39 1.00 0.61 Embodiment 12 A38 (10%) 60 ADN 0.40 1.00 0.60

In Table 1, A04, A15 and A38 are A04, A15 and A38 chemical compoundsdescribed as being selectable as the first chemical compound, and 25, 34and 60 are the second 25, 34 and 60 chemical compounds described asbeing selectable as chemical compounds. F4-TCNQ is as follows.

TABLE 2 driving voltage efficiency color coordinate lifespan (V) (cd/A)(CIE x, y) (T95, hr) Comparative Example 1 4.71 5.37 0.140 0.097 107Comparative Example 2 4.80 5.33 0.139 0.098  80 Comparative Example 34.63 5.42 0.140 0.099 110 Comparative Example 4 4.62 5.49 0.139 0.100118 Embodiment 1 4.58 5.64 0.141 0.099 138 Embodiment 2 4.52 5.70 0.1400.098 161 Embodiment 3 4.46 5.69 0.139 0.098 180 Embodiment 4 4.45 5.720.139 0.098 180 Embodiment 5 4.50 5.65 0.140 0.099 126 Embodiment 6 4.395.69 0.140 0.100 164 Embodiment 7 4.40 5.76 0.139 0.099 168 Embodiment 84.35 5.81 0.140 0.098 172 Embodiment 9 4.38 5.58 0.139 0.099 147Embodiment 10 4.34 5.61 0.140 0.099 148 Embodiment 11 4.27 5.79 0.1390.099 174 Embodiment 12 4.25 5.82 0.141 0.100 191

As can be seen from the result of Table 2, the organic electric elementaccording to the embodiments includes the first layer including thefirst compound and the second compound according to the embodiments sothat it may have excellent efficiency or lifespan compared to theorganic electric element of the Comparative Example.

In the case of Embodiments 1, 5 and 9 including the first layerincluding the first compound represented by at least one of the chemicalformula 1 and the chemical formula 2, its efficiency of lifespan isimproved compared to the organic electric element of the ComparativeEmbodiment.

In addition, compared to the Embodiments 1, 5 and 9, it can be seen thatthe organic electric element of the Embodiments including the firstlayer further comprising the second compound represented by the chemicalformula 3 has better efficiency and longer life than the organicelectric elements of Embodiments 1, 5 and 9.

Accordingly, it can be seen that a feature comprising the first compoundrepresented by one or more of the chemical formulas 1 and 2 and thesecond compound represented by the chemical formula 3 providesynergistic effects with each other to provide a more excellent organicelectric element.

It will be apparent to those skilled in the art that variousmodifications and variations can be made in the present disclosurewithout departing from the technical idea or scope of the disclosure.Thus, it is intended that the present disclosure cover the modificationsand variations of this disclosure provided they come within the scope ofthe appended claims and their equivalents.

What is claimed is:
 1. An organic electric element comprising: a firstelectrode; a second electrode; and an organic layer positioned betweenthe first electrode and the second electrode, wherein the organic layercomprises a first layer, and the first layer comprises a first compoundrepresented by one or more of the following chemical formula 1 andchemical formula 2 and a second compound represented by the followingchemical formula 3:

in the chemical formula 1 and the chemical formula 2, R₁ to R₆, whichare same or different, are each independently one selected from thegroup consisting of a hydrogen; a deuterium; a tritium; a halogen; acyano group; a nitro group; a C₆-C₆₀ aryl group; a fluorenyl group; aC₂-C₆₀ hetero ring group containing at least one hetero atom from O, N,S, Si and P; a fused ring group of a C₃-C₆₀ aliphatic ring and a C₆-C₆₀aromatic ring; a C₁-C₅₀ alkyl group; a C₂-C₂₀ alkenyl group; a C₂-C₂₀alkynyl group; a C₁-C₃₀ alkoxy group; a C₆-C₃₀ aryloxy group; a C₃-C₆₀alkylsilyl group; a C₁₈-C₆₀ arylsilyl group; and a C₈-C₆₀ alkylarylsilylgroup, and one or more of R₁ to R₆ is the cyano group, A₁ to A₄, whichmay be the same or different, are each independently one selected fromthe group consisting of a hydrogen; a deuterium; a tritium; a halogen; acyano group; a nitro group; a C₆-C₆₀ aryl group; a fluorenyl group; aC₂-C₆₀ hetero ring group containing at least one hetero atom from O, N,S, Si and P; a fused ring group of a C₃-C₆₀ aliphatic ring and a C₆-C₆₀aromatic ring; a C₁-C₅₀ alkyl group; a C₂-C₂₀ alkenyl group; a C₂-C₂₀alkynyl group; a C₁-C₃₀ alkoxy group; a C₆-C₃₀ aryloxy group; a C₃-C₆₀alkylsilyl group; a C₁₈-C₆₀ arylsilyl group; and a C₈-C₆₀ alkylarylsilylgroup, In R₁ to R₆ and A₁ to A₄ of the chemical formula 1 and thechemical formula 2, the aryl group, the fluorenyl group, the hetero ringgroup, the fused ring group, the alkyl group, the alkenyl group, thealkynyl group, the alkoxy group, the aryloxy group, the alkylsilylgroup, the arylsilyl group and the alkylarylsilyl group may each befurther substituted with at least one substituent selected from thegroup consisting of a deuterium; a nitro group; a cyano group; ahalogen; an amino group; a C₁-C₂₀ alkoxyl group; a C₁-C₂₀ alkyl group; aC₂-C₂₀ alkenyl group; a C₂-C₂₀ alkynyl group; a C₆-C₂₀ aryl group; aC₆-C₂₀ aryl group substituted with the deuterium; a fluorenyl group; aC₂-C₂₀ hetero ring group; a C₃-C₆₀ alkylsilyl group; a C₁₈-C₆₀ arylsilylgroup; and a C₈-C₆₀ alkylarylsilyl group, in the chemical formula 3, R₁and R₂, which may be the same or different, are each independently oneselected from the group consisting of a C₆-C₆₀ aryl group; a fluorenylgroup; a C₂-C₆₀ hetero ring group containing at least one hetero atomfrom O, N, S, Si and P; a fused ring group of a C₃-C₆₀ aliphatic ringand a C₁-C₂₀ alkyl group, L is one selected from the group consisting ofa C₆-C₆₀ arylene group; a fluorylene group; a C₂-C₆₀ divalent heteroring group containing at least one heteroatom from O, N, S, Si and P; adivalent fused ring group of a C₃-C₆₀ aliphatic ring and a C₆-C₆₀aromatic ring, and in R₁, R₂ and L of the chemical formula 3, the arylgroup, the fluorenyl group, the hetero ring group, the fused ring group,the alkyl group, the arylene group, the fluorylene group, the divalentfused ring group, and the divalent fused ring group may each be furthersubstituted with at least one substituent selected from the groupconsisting of a deuterium; a nitro group; a cyano group; a halogen; anamino group; a C₁-C₂₀ alkoxyl group; a C₁-C₂₀ alkyl group; a C₂-C₂₀alkenyl group; a C₂-C₂₀ alkynyl group; a C₆-C₂₀ aryl group; a C₆-C₂₀aryl group substituted with the deuterium; a fluorenyl group; a C₂-C₂₀hetero ring group; a C₃-C₆₀ alkylsilyl group; a C₁₈-C₆₀ arylsilyl group;and a C₈-C₆₀ alkylarylsilyl group.
 2. The organic electric elementaccording to claim 1, wherein the first chemical compound is representedby one or more of the following chemical formula 4 and chemical formula5:

in the chemical formula 4 and the chemical formula 5, n and m are eachindependently an integer from 0 to 5, R₇ to R₈, which may be the same ordifferent, are each independently one selected from the group consistingof a deuterium; a tritium; a halogen; a cyano group; a C₁-C₅₀ alkylgroup; and a C₁-C₃₀ alkoxy group, and the alkyl group and the alkoxygroup may each be further substituted with at least one substituentselected from the group consisting of a deuterium and a halogen.
 3. Theorganic electric element according to claim 1, wherein the firstchemical compound is represented by one or more of the followingchemical formula 6 and formula 7:

in the chemical formula 6 and the chemical formula 7, R₁ to R₆ are thesame as R₁ to R₆ defined in the chemical formulas 1 and
 2. 4. Theorganic electric element according to claim 1, wherein the secondchemical compound is represented by the following chemical formula 8:A-B-A  [chemical formula 8] in the chemical formula 8, A is representedby the following chemical formula 8-A,

B is any one of chemical structures represented by the followings,

* in the B is the position to which the A is bonded, In the chemicalformula 8-A, R₁ and R₂ are the same as R₁ to R₆ defined in the chemicalformula
 3. 5. The organic electric element according to claim 1, whereinthe first chemical compound is one or more of the following chemicalcompounds:


6. The organic electric element according to claim 1, wherein the secondchemical compound is one or more of the following chemical compounds:


7. The organic electric element according to claim 1, wherein the firstelectrode is an anode electrode, the second electrode is a cathodeelectrode, and the first layer is positioned between the first layer andthe light emitting layer.
 8. The organic electric element according toclaim 1, wherein the following general formula 1 is satisfied:0.32 eV≤L ₁ −H ₂≤0.8 eV  [general formula 1] in the general formula 1,L₁ is the LUMO energy level of the first compound, and H₂ is the HOMO(Highest Occupied Molecular Orbital) energy level of the secondcompound.
 9. The organic electric element according to claim 1, whereinthe following general formula 2 is satisfied:0.80 V≤L ₁ −H ₃≤1.4 eV  [general formula 2] in the general formula 2, L₁is the LUMO (Lowest Unoccupied Molecular Orbital) energy level of thefirst compound, and H₃ is the HOMO (Highest Occupied Molecular Orbital)energy level of the third compound.
 10. The organic electric elementaccording to claim 1, wherein the following general formula 3 issatisfied:0.40 eV≤H ₂ −H ₃≤0.9 eV  [general formula 3] in the general formula 3,H₂ is the HOMO (Highest Occupied Molecular Orbital) energy level of thesecond compound, and H₃ is the HOMO (Highest Occupied Molecular Orbital)energy level of the third compound.
 11. A display panel comprising asubpixel comprising the organic electric element of claim
 1. 12. Adisplay device comprising; the display panel of claim 11; and a drivingcircuit for driving the display panel.